Jorftls peters co



(NoModeL') v F. `L ROSENTRETER.`

SASH BALANCE.

No. 487,335.- PatentedDec. 6, 1892.

UNITED ST Tas PATENT OFFICEm FRANK L. ROSENTRETER, OF ROCHESTER, NEW YORK, ASSIGNOR TO THE CALDWELL MANUFACTURING COMPANY, OF SAME PLACE.

SASH-BALANCE.

SPECIFICATION forming part of Letters Patent No. 487,335, dated December 6, 1892.

Application iiled March 16, 1892. Serial No. 425,195. (No model.)

To all whom it may concern.' m is a thin plate fitted to the face of the Be it known thatI, FRANK LROSENTRETER, drum on the side opposite from the closed 55 of Rochester, in the county of Monroe and side of the case. It is preferably made of State of New York, have invented a certain spring metal of the form shown in Fig. 4, the 5 new and useful Improvement in Sash -Balouter edge being made circular and projectances; and I do hereby declare that the foling to the outer edge of the drum and the iulowing is a full, clear, and exact description ner edge being made straight to lit closely to 6o of the same, reference being had to the drawthe back of the face-plate a. By this means ings accompanying this specification. it corresponds in size and shape with the op- 1o My improvement relates to spring-balposite fixed side of the case and covers the ances; and it consists in the combination of face of the drum and presents an appearance a case having one side only, a drum fitted to similar to the fixed side of the case, while at 65 said side and held by a rivet, a spring atthe same time it serves as a spring and a tached at one end to the drum and at the brake, against which the drum rubs to pro- 15 other to a hub of the case, a tape winding on duce tension on the sash. It is attached by the drum, and a thin separate plate forming the same rivet that unites the drum with the a brake tted to the side of the drum oppocase, being provided with a central hole n, 7o site to the side plate of the case and held by through which the rivet passes. The springthe rivet, all as hereinafter more fully deplate is prevented from turning by reason of 2o scribed. its square edge fitting the face-plate. The In the drawings, Figure l is a perspective face-plate on this side has a housingjp at the View of the device. Fig. 2 is a sectional side edge, within which the spring-plate passes, 7,5 elevation looking on the same side as in Fig. thereby making a good iinish. It may, if del. Fig. 3 is a horizontal cross-section in line sired, be made of different form from that z5 oc @c of Figs. l and 2. Fig. 4 is a face View of above described, so long as it serves as a iinthe separate side plate. ish to the side of the device and a brake to A indicates the case, and B the drum. The the drum. 8o case consists of the face-plate a and a single Having described my invention, I do not sideplate l). The other side plate is not used; claim a case with one fixed side plate and a 3o but the drum is iitted to the single side plate, spring-disk set therein, as shown in my pendby which means the device is made thinner ing application, filed March 16, 1892i, Serial than usual and can be fitted more readily to No. 425,196. 85 narrow windows. The single side plate is What I claim as new, and desire to secure made separate from the face-plate, and the by Letters Patent, is- 3 5 two are fitted together by a rivet at the top In a sash-balance, the combination of a case and an overlapping tongue at the bottom. having one side only, a drum iitted to said The drum B consists of a cylindrical rim side and held by a rivet, a spring attached 9o with a closed face on the side opposite from to the drum and to the hub of the case for the side plate of the case, and the drum and operating the drum, a tape winding on the 4o case are united by a rivet c. drum, and a thin plate forming the brake to d is the ordinary fiat coiled spring, inside the drum and a cover to the side of the case the drum, one end being attached to the opposite from the xed side of the same, as 95 drum and the other to a hub fof the case, and for the purpose specified. which projects inside of the drum. In witness whereof I have hereunto signed 45 g is the tape attached to the drum, windmy name in the presence of two subscribing ing on the same and supporting the sash. witnesses. The drum is provided with a slot h, cut crosswise in its rim, and the end of the tape is FRANK L. ROSENTRETER. folded on itself, making an enlargement 7c. 5o The tape is simply slid into the slot, the en- Witnesses:

largement resting under the rim. This makes R. F. OSGOOD, a secure attachment and one not liable to W. H. CALDWELL. break. 

